I looked and found no reference to this thing anywhere, so if its been done already, oops.
http://kenvsryu.blogspot.com/2007/01...in-action.html
http://www.xcalibertactical.com/products/strafer.html
9000 to 10,500 rounds per minute. Its comes in .177 or
6mm Velocity is adjustable from 250 to 625 fps.